Conventional steam contains foreign particles
from chemicals, from the metal and from the feed water. Normally this does not cause any
problems. But even though the temperatures are high, killing most germs etc., conventional
steam cannot be considered 100% clean.

Special
high quality steam is used in special applications on hospitals, special institutions,
pharmaceutical industry, biochemical industry, food industry etc.

Pure Steam Reboiler
for Pharmaceutical Industry

The terms often used for
this high quality steam, are clean steam and pure steam.

Clean Steam at
Danish Hospital

Clean steamis made in an hygienic environment of stainless steel. It is clean, which means that it does not contain
significant amounts of particles with e.g. iron, iron oxide and dirt of any kind. The feed
water quality is likewise in an appropriate quality. Application could be food industry,
and chemical industry.

Pure steam is both something
similar to clean steam, and still something quite different. The quality of pure steam is
extremely high. This kind of steam is often used in direct contact with medicals
and controversial sterile parts - it must not for contains any particles what so ever.
It is therefore generated in a super sanitary environment. Application is being even more
common within hospitals, but also special institutions, pharmaceutical industry,
biochemical industry. Both clean steam and pure steam applications can be
solved by TT BOILERS solution.

Tube
coil and all part in contact with steam are made in high grade stainless
steel

Design
The clean and pure steam application both requires a special design on the
feed water provider and the steam generating plant. Obviously the quality of feed water
determine the quality of the steam. The general design comply with materials in stainless
steel only.

Pure steam requires that
the surface in contact with the pure steam, including weldings, are polished. The design
must not allow any traps in which condensate cannot be drained off 100%. All parts -
materials and components - must be of a very special pure steam quality.

Basically reboilers use high
pressure steam to produce low pressure steam. Thus the design can be made in a customized
degree of sanitarily.

Clean steam and pure steam boilers and
generators are available up to 25 barg working pressure. Sanitary design with thermal
fluid is an option. See the chapter aboutthermal fluid (hot oil)
heater units.